<html charset="utf-8">
    <head>
        <title>Youcaibi</title>
    </head>
    <body>
        <form enctype="multipart/form-data" method="post"  action="./upload">
            <input type="file" name="file"/>
            <input type="submit" value="upload file"/>
        </form>
    </body>
</html>